$\left(2^4\right)^0$

$2\cot\left(y\right)\sin\left(y\right)+\cot\left(y\right)=0$

$x^5+\frac{-2}{x}-3$

$\left(3x^6+3\right)\left(3x^6-3\right)$

$\lim_{x\to0}\left(\frac{\sin^2\left(180x\right)}{\pi x^2}\right)$

$2y+4z$

$\left(-ab4\right)\left(-bc5\right)\left(-cd6\right)$